Subiaco Dam (upper) is an earth dam located in Logan County, Arkansas, built in 1948. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 27 ft27 ft tall and 337 ft long, taller than 59% of U.S. dams with a recorded height. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Subiaco Dam (upper)
The primary purpose of Subiaco Dam (upper) is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by Subiaco Abbey (private). It impounds the East Fork Hegwood Creek near Subiaco.
The dam stands 27 feet tall and stretches 337 feet across, creates a reservoir covering 5 acres, has a maximum storage capacity of 37 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1948, the structure is well-established, with more than 75 years of service.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized.
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Location
| State | Arkansas |
| County | Logan |
| Nearest City | Subiaco |
| River/Stream | East Fork Hegwood Creek |
| Coordinates | 35.28167, -93.64333 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 27 ft |
| Dam Height | 27 ft |
| Dam Length | 337 ft |
| Year Completed | 1948 (78 years old) |
Storage & Hydraulics
| NID Storage | 37 acre-ft |
| Max Storage | 37 acre-ft |
| Normal Storage | 24 acre-ft |
| Surface Area | 5 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 360 cfs |
Ownership & Safety
| Purpose | Water Supply |
| Owner | Subiaco Abbey |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | AR00876 |
| Federal ID | AR00876 |
| More Info | State Dam Safety Program |